So tonight I had a first experience of the mystery precip. On my way back from Bethlehem, I noticed flakeage in the headlights starting about 2 miles from Bretton Woods. Very very fine, doesn't really accumulate. It's pretty warm, 8 F, so I don't think it's angel dust but it's also not upslope - there is not a cloud in the sky. Snow guns at the resort are cranking but it seems too far for that to travel 2 miles with no wind? No idea.